CN103671245A

CN103671245A - Impeller and fan with impeller

Info

Publication number: CN103671245A
Application number: CN201210341101.6A
Authority: CN
Inventors: 任文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-16
Filing date: 2012-09-16
Publication date: 2014-03-26
Anticipated expiration: 2032-09-16
Also published as: CN103671245B

Abstract

The invention relates to an impeller. The impeller comprises an impeller body and a protection cover. The impeller body comprises a hub and a plurality of blades, wherein the hub is roughly conical, and the blades are connected to the hub. The protection cover is connected to the outer side edges of the blades and comprises a shell, a sound attenuation component and at least one through hole, wherein the shell is provided with an internal cavity, the sound attenuation component is located in the internal cavity, and the through holes are formed in the shell. The invention further provides a fan with the impeller. The impeller or the fan is low in noise.

Description

Impeller and the fan with this kind of impeller

Technical field

The fan that the present invention relates to a kind of impeller and there is this kind of impeller.

Background technique

Traditional domestic fan generally includes the impeller that rotates around central rotating shaft and the motor of drives impeller rotary work.Impeller is usually located in cage, and this cage allows air stream through housing, yet but stops user when using fan, to touch the impeller of rotation.

Just commercially in recent years without blade fan, do not use with the impeller of cage and launch air stream from fan.Without blade fan, generally include pedestal and be arranged on the nozzle on pedestal, in pedestal, be provided with the impeller being driven by motor, this kind of impeller comprises the wheel hub of the general conical with central shaft hole and is connected to a plurality of blades on described wheel hub, this kind of impeller needs High Rotation Speed work conventionally, and its maximum (top) speed is up to 8000 revs/min.

This kind of impeller have be shaped easily, manufacturing efficiency high, but the noise producing during rotary work is larger.

Summary of the invention

A first aspect of the present invention is will provide-kind of impeller, this kind of impeller, it is characterized in that, described impeller comprises impeller bodies and guard shield, described impeller bodies comprises the wheel hub of the general conical with central shaft hole and is connected to a plurality of blades on described wheel hub, described guard shield is connected to the outer ledge of described blade so that around described wheel hub and described blade, described guard shield comprise have internal cavities housing, be arranged in the noise reduction member of described internal cavities and at least one is arranged on described housing and the through hole being communicated with described internal cavities.

Because the guard shield of this kind of impeller has noise reduction member, the noise producing while being conducive to decay vane rotary work, obviously reduces the noise that impeller produces.

Preferably, described housing comprises the first housing and the second housing that limits described internal cavities, and wherein, the first housing is surrounded by the second housing substantially.

In a preferred embodiment, described housing comprises the first housing and the second housing that limits described internal cavities, and wherein, the first housing is surrounded by the second housing substantially, and described the first housing is fixed by binding agent and the second housing.

In another preferred embodiment, described housing comprises the first housing and the second housing that limits described internal cavities, and wherein, the first housing is surrounded by the second housing substantially, and described through hole is positioned on described the first housing.

Preferably, described internal cavities has a plurality of.

Preferably, described internal cavities is substantially annular.

Described through hole can be various shape, can be circular, can be round rectangle, can also be other shape; The aperture of described through hole is conventionally between 0.5mm to 8mm, preferably between 0.5mm to 5mm.

The blade quantity of described impeller is conventionally the scope of 3 to 23, preferably the scope of 3 to 11.

Described noise reduction member comprises acoustic foam, and acoustic foam comprises sponge and glass wool; Described noise reduction member can be various shape, and the shape of described noise reduction member comprises annular and part annular.

Described noise reduction member comprises noise reduction layer, and wherein, the thickness of noise reduction layer is between 1mm to 20mm.

A second aspect of the present invention is will provide-kind of fan, this kind of fan, it is characterized in that, described impeller comprises impeller bodies and guard shield, described impeller bodies comprises the wheel hub of the general conical with central shaft hole and is connected to a plurality of blades on described wheel hub, described guard shield is connected to the outer ledge of described blade so that around described wheel hub and described blade, described guard shield comprise have internal cavities housing, be arranged in the noise reduction member of described internal cavities and at least one is arranged on described housing and the through hole being communicated with described internal cavities.

Preferably, described internal cavities has a plurality of; Described internal cavities is substantially annular.

The above-mentioned feature about a first aspect of the present invention is also applied to a second aspect of the present invention equally.

In a preferred embodiment, described fan comprises nozzle, impeller chimney, be positioned at the impeller of impeller chimney and the motor of drives impeller rotary work, described impeller comprises impeller bodies and guard shield, described impeller bodies comprises the wheel hub of the general conical with central shaft hole and is connected to a plurality of blades on described wheel hub, described guard shield is connected to the outer ledge of described blade so that around described wheel hub and described blade, described guard shield comprises the housing with internal cavities, the noise reduction member that is arranged in described internal cavities is arranged on described housing and the through hole being communicated with described internal cavities with at least one.

Accompanying drawing explanation

Figure l is the front schematic view of fan of the present invention.

Fig. 2 is the side view of fan shown in Fig. 1.

Fig. 3 is the sectional view that the A-A line along the fan shown in Fig. 1 intercepts.

Fig. 4 is the view after the amplification of the impeller in Fig. 3.

Fig. 5 is the decomposition view of the impeller in Fig. 4.

Fig. 6 has shown the another kind of replacing structure of impeller.

Embodiment

Figure l is that Fig. 2 is the side view of fan shown in Fig. 1 from the schematic diagram of the fan of the present invention of device forward observation, and Fig. 3 has shown the internal structure of fan shown in Fig. 1.From Fig. 1 to Fig. 3, can find out, this kind of fan comprises pedestal 1 and is arranged on the nozzle 2 on pedestal 1; Pedestal 1 comprises Base body 4 and is positioned at Base body 4 base portion 3 below, and Base body 4 has sidewall, and sidewall comprises air inlet 5, the form that air inlet 5 is grid hole; Base body 4 comprises impeller chimney 10, is positioned at the impeller 11 of impeller chimney and the motor 12 of drives impeller rotary work, and impeller chimney 10 has air intlet 13 and air outlet slit 14; Nozzle 2 comprises inner passage 7 and the relief opening 8 that receives air-flows for the air outlet slit 14 from impeller chimney, and nozzle 2 defines an opening 6, and this opening is to have the scarce opening of circle, at the central part of this opening, has axis X.

Fig. 4 is the view after the amplification of the impeller in Fig. 3, and Fig. 5 is the decomposition view of the impeller in Fig. 4.From Fig. 4 and Fig. 5, can find out, impeller 11 comprises impeller bodies 15 and guard shield 22; Impeller bodies 15 comprises the wheel hub 16 of the general conical with central shaft hole 9 and is connected a plurality of blades 17 on wheel hub; Guard shield 22 is connected to the outer ledge of blade, and guard shield 22 comprises having the housing 18 of internal cavities 19, the noise reduction member 20 that is arranged in internal cavities 19 and a plurality of through hole 21; Housing 18 comprises the first housing 23 and the second housing 24, and wherein, the first housing 23 is surrounded by the second housing 24 substantially, and a plurality of through holes 21 are positioned on the first housing 23.

In the present embodiment, the shape of internal cavities 19 is substantially annular, and the shape of noise reduction member 20 is also substantially annular, the noise reduction member that noise reduction member 20 forms for glass wool material, and through hole 21 is about the manhole of 1mm for diameter.

During this kind of fan work, be positioned at motor 12 drives impeller 11 rotary works of pedestal 1, air can be drawn into from the air inlet 5 being positioned at Base body 4, the air entering in Base body 4 is admitted in the inner passage 7 of nozzle 2 after boosting, and be deflated mouthfuls 8 ejections, from the air of fan outside, by opening 6, being deflated mouthful 8 air-flows that spray entrainments, the air-flow being ejected and the air-flow being entrainmented form the total air flow penetrating forward from nozzle 2, because the guard shield of this kind of impeller has noise reduction member, the noise that its impeller produces obviously reduces.

Fig. 6 has shown the another kind of replacing structure of impeller, and as can be seen from Figure 6, the impeller of the present embodiment is similar to the impeller shown in Fig. 4, and just the quantity of internal cavities 19 and noise reduction member 20 is different.In the present embodiment, the quantity of internal cavities 19 and noise reduction member 20 is all 3.

The detailed description that the present invention is not limited to provide above.Those skilled in the art should be understood that deformation program of the present invention.For example, internal cavities and noise reduction member can have any suitable structure, and the density of noise reduction member and mass distribution can change.

Claims

1. an impeller, it is characterized in that, described impeller comprises impeller bodies (15) and guard shield (22), described impeller bodies comprise there is central shaft hole (9) general conical wheel hub (16) and be connected to a plurality of blades (17) on described wheel hub, described guard shield is connected to the outer ledge of described blade so that around described wheel hub and described blade, described guard shield comprises the have internal cavities housing (18) of (19), be arranged in the noise reduction member (20) of described internal cavities and the through hole (21) that at least one is arranged on described housing and is communicated with described internal cavities.

2. the impeller as described in claim l, is characterized in that, described housing comprises the first housing (23) and the second housing (24) that limits described internal cavities, and wherein, the first housing is surrounded by the second housing substantially.

3. the impeller as described in claim l, is characterized in that, described internal cavities has a plurality of.

4. the impeller as described in one of claim l to 3, is characterized in that, described internal cavities is substantially annular.

5. the impeller as described in one of claim l to 3, is characterized in that, the aperture of described through hole is between 0.5mm to 5mm.

6. the impeller as described in one of claim l to 3, is characterized in that, described noise reduction member comprises acoustic foam.

7. the impeller as described in one of claim l to 3, is characterized in that, the quantity of described blade is the scope of 3 to 19.

8. impeller as claimed in claim 2, is characterized in that, described the first housing is fixed by binding agent and the second housing.

9. impeller as claimed in claim 2, is characterized in that, described through hole is positioned on described the first housing.

10. a fan, is characterized in that, described fan comprises the impeller as described in one of claim 1 to 9.